Niagara Falls is one of the most recognized landmarks in the U.S. and Canada. Millions of people visit every year. While you may recognize this landmark, how much do you really know about it? Do you know: How many waterfalls make up Niagara Falls? How much water goes over Niagara Falls every second? How much of the water in the Niagara River goes over the falls? Find out this and more in this book